Polyester is a category of polymers that contain the ester functional group in every repeat unit of their main chain.
In the aerospace context, polyester is a type of synthetic polymer that is used in a variety of applications, including as a material for aircraft components. Polyester is known for its strength, durability, and resistance to chemicals and other environmental factors.
One example of the use of polyester in aerospace is in the construction of aircraft structures such as fuselage, tail, and wing components. The material is often used in the form of fiberglass reinforced plastic (FRP) composites, which provide a balance of strength and weight.
Another example of the use of polyester in aerospace is in the insulation of aircraft cabins and engines. Polyester fibers are often used as insulation due to their high thermal resistance and ability to withstand high temperatures.
Additionally, Polyester is also used for the production of some ropes and cords which are used for aircraft tie downs, towing and lifting operations.